[TIB] Re: Matrix on the 92 plus


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[TIB] Re: Matrix on the 92 plus




Hi,
I bought the TI89 too and I am having difficulties using Matrices.
Would you mind helping me figure out how to work out matrices on the TI89.

Nick

----- Original Message -----
From: <Nitrocloud@aol.com>
To: <ti-basic@lists.ticalc.org>
Sent: Tuesday, November 05, 2002 12:06 PM
Subject: [TIB] Re: Matrix on the 92 plus


>
> Ok.  I have an 89 and lately I just completed a little part of matrix
algebra in Algebra II.  I'm surprized that I didn't speak earlier, but here
it is.
>
> [[1,2][3,4]]->a //Stores the matrix
> a[1] //Returns row 1 = [1,2]
> a[1,2] //Returns element 2 of row 1 = [2]
> 5->a[1,1] //Changes 1 to 5
> a //displays the matrix = [[5,2][3,4]]
> In a message dated Tue, 5 Nov 2002 11:23:33 +0100 (MET),
robvanwijk@gmx.net writes:
>
> >
> >
> > > Hi all,
> > > Ok I figured out from the manual how to make a matrix on the 92 plus
> > >
> > > [[1,2,3][4,5,6]]->mat1 This makes the matrix with 1,2,3 as row 1 and
> > > 4,5,6 as row 2. the thing I cant get to work is how to edit them. Like
> > > for a list you do list[2] and that gives you the 2nd var in the list.
> > > But with a matrix.aint gotta clue lol. Please someone fill me in on
this
> > > thnx.
> > >
> >
> > On the 83 it works like this: (A is the matrix)
> > A{1,2} gives the second element of the first row.
> > SomeNumber->A{1,2} stores the number to the second element
> > of the first row, without effecting the rest of the matrix.
> >
> > I don't have a 92, but I'd guess you'd have to use either what I
> > said, or replace the braces ( '{', '}' ) with brackets ( '[', ']' ).
> > Otherwise, why don't you read the manual again, it should
> > be in
> > there.....
> >
> > Grtz,
> > Rob van Wijk
>
>




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